42644042 has 16 divisors (see below), whose sum is σ = 74031360. Its totient is φ = 18044208.

The previous prime is 42644039. The next prime is 42644051. The reversal of 42644042 is 24044624.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18173 + ... + 20384.

It is an arithmetic number, because the mean of its divisors is an integer number (4626960).

Almost surely, 2^42644042 is an apocalyptic number.

42644042 is a deficient number, since it is larger than the sum of its proper divisors (31387318).

42644042 is a wasteful number, since it uses less digits than its factorization.

42644042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38645.

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 42644042 is about 6530.2405774979. The cubic root of 42644042 is about 349.3704110154.

Adding to 42644042 its reverse (24044624), we get a palindrome (66688666).

The spelling of 42644042 in words is "forty-two million, six hundred forty-four thousand, forty-two".